2878558 has 4 divisors (see below), whose sum is σ = 4317840. Its totient is φ = 1439278.

The previous prime is 2878543. The next prime is 2878573. The reversal of 2878558 is 8558782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8558782 = 2 ⋅4279391.

It is an interprime number because it is at equal distance from previous prime (2878543) and next prime (2878573).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719638 + ... + 719641.

It is an arithmetic number, because the mean of its divisors is an integer number (1079460).

2^2878558 is an apocalyptic number.

2878558 is a deficient number, since it is larger than the sum of its proper divisors (1439282).

2878558 is a wasteful number, since it uses less digits than its factorization.

2878558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439281.

The product of its digits is 179200, while the sum is 43.

The square root of 2878558 is about 1696.6313683296. The cubic root of 2878558 is about 142.2519826592.

The spelling of 2878558 in words is "two million, eight hundred seventy-eight thousand, five hundred fifty-eight".